Electronic component cooling apparatus

Abstract

An electronic component cooling apparatus capable of permitting a sufficient amount of air to be fed to an electronic component to be cooled. An impeller which includes a plurality of blades for sucking air from one side in an axial direction of a revolving shaft of a motor is fixed on a rotor of the motor. A casing having a cylindrical cavity defined therein in which the motor and impeller are received is constructed of a peripheral wall arranged so as to surround the impeller and a closing wall for closing an end of the cavity on the other side in the axial direction. The peripheral wall is formed at a portion thereof in proximity to an end thereof on the one side with a lateral discharge port through which air suckedly introduced into the cavity is discharged so that a surrounding portion for surrounding a whole circumference of the impeller is left at a portion of the peripheral wall in proximity to an end on the other side. The casing is provided with a spacer means for providing an interval between the casing and an opposite member.

What is claimed is: 
     
       1. An electronic component cooling apparatus comprising: a motor including a rotor and a stator;   an impeller securely mounted on said rotor and including a plurality of blades for sucking air from one side in an axial direction of a revolving shaft of said motor;   a casing formed therein with a cavity in which said impeller is received;   said casing including a wall arranged so as to surround said impeller to define said cavity, and at least one discharge port through which air sucked into said cavity is discharged;   said motor including a housing member supported on an end of said wall defined on said one side through a plurality of webs arranged thereon so as to be spaced from each other at intervals in a circumferential direction thereof;   said webs having legs arranged so as to extend on said one side to provide a spacer means for establishing a space which permits air to be suckedly introduced into said cavity in a radial direction of said revolving shaft.   
     
     
       2. An electronic component cooling apparatus comprising: motor including a rotor and a stator;   an impeller securely mounted on said rotor and including a plurality of blades for sucking air from one side in an axial direction of a revolving shaft of said motor;   a casing formed therein with a cavity in which said impeller is received, said casing including a wall arranged so as to surround said impeller to define said cavity, and at least one discharge port through which air sucked into said cavity is discharged;   said casing being provided with a spacer means, said spacer means being arranged so as to outwardly project on said one side to provide a space through which air is suckedly introduced into said cavity in a radial direction of said revolving shaft;   said spacer means being constructed of legs of webs for supporting a housing member of said motor on said casing.   
     
     
       3. An electronic component cooling apparatus as defined in claim 2, wherein said spacer means is formed into a length in said axial direction which permits a suction pressure enough to permit a predetermined amount of air to be suckedly introduced into said cavity when an opposite member is arranged on said spacer means in a manner substantially opposite to said cavity. 
     
     
       4. An electronic component cooling apparatus as defined in claim 2, wherein said casing is provided with one said discharge port for discharging air in only one direction. 
     
     
       5. An electronic component cooling apparatus as defined in claim 2, wherein said casing is provided with a plurality of said discharge ports for discharging air in the axial direction of said revolving shaft.